There is the SMX-6, and there is the Supertech R, and in between these two is the action area of this SMX Plus V2. In plain language: street use or track, it can do both, and the technology on board the SMX Plus V2 is downright impressive. Plus, it looks great.
You can pair this boot with a full race suit or with (motorcycle) jeans.
The ample accordion panels and the TPU ankle brace are two striking elements that clearly come from the SMX-6 boots, while the dual construction, with an additional 'shoe-in-the-boot', is inspired by the Supertech R.
Just to refresh your memory: the accordion panels ensure optimal freedom of movement on and off the bike, the ankle brace allows just as much comfortable movement, but supports the ankle in the event of a crash. The heel and shin, not coincidentally also vulnerable in a crash, are also made of hard TPU. Reinforcements on the sole and the toes are obvious, just like the shifting reinforcement and the replaceable toe slider. The last one has a screw in it that can cut off a tenth of your lap time. It goes without saying that every part that is structurally subject to wear, can be replaced.
The inner shoe is non-removable, and that is the only limitation. With Kevlar lacing, and consisting mainly of mesh to keep the whole - especially in combination with the actual leather boot - still ventilated and breathable, this is only one element within the whole. That whole is the result of research, development and the pursuit of a perfect fit, excellent feedback, and maximum protection.
Apart from the Kevlar lacing on the inside, on the outside you have a longitudinal zipper and Microlock ratchet closure. Along the entire length of that zipper, an extra strip of accordion material is attached, to offer motorcyclists more space at the bridge.
The SMX Plus V2 is almost certainly only surpassed by the Supertech R, to which it is very closely related. And apart from that (professional) MotoGP boot, you'll have to work hard to find a boot that's as light, flexible, and performant. Or a pleasure to look at. We can't stress enough how much visible and invisible technology there is in these boots. This is the kind of boot you'll be adjusting the matching bike to. And in the meantime, just put the SMX Plus V2 in the living room, to be admired.